#webpack{
    color: red;
}
.box1{
    width: 300px;
    height: 300px;
    background: url("../images/1.jpg") no-repeat;
}
.box2{
    width: 300px;
    height: 300px;
    background: url("../images/2.jpeg") no-repeat;
    background-size:contain;
}